Every noun has a gender. There are three types of genders in the English Language. They're mannish, womanlike, andNeuter.However, his gender is mannish, If a person or beast is manly. also, if a person or beast is womanish, her gender is womanlike. Objects are neither mannish nor womanlike. The gender of similar objects is neuter. 
Let us look at some exemplifications. 
She goes to academy. 
Then, she stands for a girl. womanish persons are womanlike in gender. 
Steve plays hockey well. 
Then, Steve is a boy. manly persons are mannish in gender. 
When it comes to nouns like persons and creatures, they can be of either gender. As per the instructions given, we can change a mannish noun into a womanlike noun and vice versa. One of the styles of making a mannish noun womanlike is by adding the suffix “ ess ” at its end. 
Emperor – Empress. 
Some nouns have their own specific womanish counterparts. They can not be formed by changing the mannish form of the word.E.g. The womanlike of the father is the mama while the womanlike of man is a woman. 
Let us consider the question given above. We must find out the womanlike form of the common noun lad. The womanlike form of lad is sheila
. thus, option ‘ a ’ is the correct answer.